Device and method for improving detection precision of digital VR current
A digital and current technology, applied in the field of current detection, can solve the problems of various motherboard performance, poor performance consistency, affecting CPU performance, etc., to achieve the effect of simple structure, reliable design principle, and outstanding substantive characteristics.
Active Publication Date: 2017-09-12
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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[0004] Taking the accuracy of the output current as an example, this part is particularly important on the CPU side. The CPU will determine the number of cores and frequency it is working on based on the current detected by the VR. Therefore, the current is directly related to the performance of the CPU. , if the current detection is inaccurate, it will directly affect the performance of the CPU. For mass-produced motherboards, if the CPU current detection is inaccurate, it will inevitably cause the performance of the motherboard to vary greatly, and the performance consistency is very poor. Therefore, the current detection The accuracy of the
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[0034] In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the specific embodiments of the present invention.
[0035] like figure 1 As shown, the present invention provides a device for improving the accuracy of digital VR current detection, comprising a digital VR chip 1, an inductor 2, a resistor 3, a first capacitor 4, a second capacitor 5, an electronic load 6, and a display module 7;
[0036] The digital VR chip 1 includes a communication terminal 1.3, an output voltage terminal 1.4, a current positive adjustment terminal Isence+1.5, and a current negative adjustment terminal Isence-1.6;
[0037] The inductor 2 includes a voltage input terminal 2.1 and a voltage output terminal 2.2;
[0038] The communication terminal 1.3 of the digital VR chip 1 is connected to the disp...
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The invention provides a device and method for improving the detection precision of a digital VR current, and the device comprises a digital VR chip, an inductor, a resistor, a first capacitor, a second capacitor, an electronic load, and a display module. The digital VR chip is connected with the display module, and is connected with a voltage input end of the inductor and one end of the resistor. The other end of the resistor is connected with the positive electrode of the first capacitor and the digital VR chip. The negative electrode of the first capacitor is connected with the voltage output end of the inductor, the positive electrode of the second capacitor, the digital VR chip and one end of the electronic load. The negative electrode of the second capacitor is connected with the other end of the electronic load, and is also grounded. The digital VR chip comprises a current register unit and a compensation register unit. Through the setting of a loading value of the electronic load, the comparison with a current value detected by a current register of the digital VR chip and the elimination of an error by a compensation register, the method guarantees the current detection accuracy and achieving the purpose of improving the current detection precision.
Description
technical field [0001] The invention belongs to the field of current detection, and in particular relates to a device and method for improving the accuracy of digital VR current detection. Background technique [0002] Digital VR, digital voltage regulator. [0003] Server motherboards have high performance requirements, and the high performance of the power supply is the basis for the high performance of the motherboard. The high performance of the switching power supply is reflected in many aspects, such as the accuracy of the output voltage, the accuracy of the output current, and circuit protection and so on. [0004] Taking the accuracy of the output current as an example, the requirements of this part on the CPU side are particularly important. The CPU will determine the number of cores, frequency, etc., according to the current detected by the VR, so the current is directly related to the performance of the CPU. , If the current detection is inaccurate, it will dire...
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IPC IPC(8): G01R35/00
CPCG01R35/005
Inventor 康磊
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD